18 Feb
2008
18 Feb
'08
1:13 p.m.
Am Montag, 18. Februar 2008 17:54:33 schrieb Dave Phillips:
Greetings,
I'd like to add some conditional tests to my simple scripts. For
example, I want to query the system to determine whether JACK is already
running. If it is, I'll run an app (e.g. xine or AlsaPlayer) configured
for JACK. If JACK is not running, I'll run the app without it.
So how do I test for JACK in a simple bash shell script ?
hi
that is what I do:
#!/bin/bash
if ps xa | grep -v grep | grep "jackd " >/dev/null ; then
if ! ps xa | grep -v grep | grep "qjackctl" >/dev/null ; then
pidjackd=`pidof jackd`
kill -TERM "$pidjackd"
sleep 1
qjackctl &>/dev/null &
sleep 1
fi
else
if ps xa | grep -v grep | grep "qjackctl" >/dev/null ; then
pidqjack=`pidof qjackctl`
kill -TERM "$pidqjack"
sleep 1
qjackctl &>/dev/null &
sleep 1
else
qjackctl &>/dev/null &
sleep 1
fi
fi
# this part check if jackd is start prop
cekz=0
cek=`pidof jackd`
while [ "$cek" = "" -a $cekz -lt 4 ]; do
if [ "$cek" = "" ]; then
cekz=`expr $cekz + 1`
sleep 2
cek=`pidof jackd`
fi
done
# this part start applications if jackd run
if [ "$1" != "" -a $cekz -lt 5 ]; then
while [ "$1" != "" ]; do
$1 &>/dev/null &
# sleep 5 # if apps start to fast uncoment this
shift
done
fi
with this script I start all my Audio/Midi apps. I have add it to the
menuentry`s like that: /path/to/script rosegarden qsynth vkeybd
or
/path/to/script ardour qjacktuner
reegards hermann